Windows- Improved network performance of the overlay web browser- Fixed some games which got stuck in "Performing first time setup"- Fixed a potential crash related to font selection for non-English text

Mac- Improved behavior of Steam windows across multiple Spaces- Fixed popup menu visibility problems caused by popular third-party utilities- Fixed an app shutdown crash that could occur on logout or system reboot - Fixed a crash when quitting before the main window appears- Fixed Cmd-W and other hotkeys when a notification popup is visible

Linux- Added a --reset command line option to reinstall Steam files without touching installed games

Changes:- Fixed texture corruption when using the Game Overlay in OpenGL games- Fixed failing to do HTTP downloads from hosts that started with a numeral- Linux - Added X window manager name to system info dialog

Features- Added support for Linux- Offline messaging: You can now send messages to users who are offline. They will receive the message when they next log in- Opening a chat dialog with a friend will show some recent chat history - A web chat interface is available, you can find it by navigating to the Steam Community Friend Activity page in your web browser- Added a caps lock warning indicator to the login dialog password textbox- Added support for better content sharing between games- Improved performance and responsiveness of client UI- Improved startup time for users with large screenshot folders- Prevent users from selecting an invalid screenshots folder- Suspend all downloads automatically when a game is launched - Added third party Mod support for games on new content system - Big Picture: Users can now add wallet funds and authorize microtransactions - Big Picture: In-game overlay now moves back on ESC when appropriate rather than closing directly- Added the date that SteamGuard was enabled in the settings dialog- Improved handling of international characters

Fixes- Fixed several issues with scroll bars in the store and community views - Fixed forum links opening in external browser windows - Reduced retail install time when reading from optical disc on Windows XP/Vista - Removed "/me" chat command, which allowed some users to modify the color of their chat text- Fixed crash on startup caused by corrupt ClientRegistry.blob file- Fixed a top crash related to video streaming - Fixed an issue with cascading menu items- Fixed issue where some game installers cannot write to the registry- Fixed screenshots sometimes not showing up in screenshot manager when copied from another Steam installation- Big Picture: Fixed left/right navigation of game related sections in the in-game overlay - Big Picture: Fixed default font used by the in-game overlay- Fixed launching 64-bit games and applications- When a friend's status changes multiple times consecutively, only the last change will be shown (ie "Friend is now Online", "Friend is now Away" messages)- Fixed Windows error message "Disk not ready" in game install wizard- Made the preview image for guides smaller in the overlay - Caching guide preview images when viewed in the overlay- Added Ctrl+A select-all for system info text

Mac- Greatly reduced CPU usage and power consumption- Fixed command-W and other keyboard shortcuts- Fixed bugs with window management and the Window menu- Fixed leaks which caused memory usage to increase over time- Added partial support for Retina displays- Fixed bug with tooltips showing through Windows- Notification popups now respond on the first click- Web page views no longer freeze up after clicking and dragging the mouse- Clicking the dock icon now brings all Steam windows to the front

Changes:- Added list of favorite and popular Guides to overlay- Fixed layout of installation wizard when installing multiple apps.- Fixed rare occurrence of prompting a user to accept the same Steam Subscriber Agreements multiple times.- Fixed stopping game installation when pressing cancel button in installation wizard- Disabled trade menu item in multi-user chats- Fixed retail disc install error "missing app configuration"- Big Picture: Added support for notifying the user when logging into an account that has already logged in on another machine- Big Picture: Fixed bug where chat notifications might not be displayed when in game.- Big Picture: Fixed possibly displaying multiple countdown timers in the store- Big Picture: Fixed loading animations disappearing before loading was complete- Big Picture: Fixed crash when entering Big Picture mode while in a voice chat- Big Picture: Fixed potentially losing input focus while searching the store- Big Picture: Fixed size of main menu UI sometimes being incorrect when navigating backward in the store- Big Picture: Added displaying a list of all DLC for an application in the store- Big Picture: Fixed copied text range sometimes being incorrect if you selected the text to copy in a backwards direction via the mouse- Big Picture: Support closing URL open dialog in friends chats with cancel hotkey/button- Big Picture: Fix favorite counts not updating in all games view when you add/remove favorites prior to next restart- Big Picture: Fix pending friend invites showing up as background of community rather than actual friends- Big Picture: Improve perf loading community tab background/friends list - Big Picture: Fix rendering issue with some panels with rounded corners and box shadows with fulldesktopres command line param- Big Picture: When in the main Steam view (not in-game overlay) support clicking notification toasts to activate- Big Picture: Fix footer in main Steam window being disabled while a game is running even if you alt-tab back out to Steam- Big Picture: Fixed missing string in delete local content confirmation for applications- Big Picture: Fixed friend and group chats scrolling to bottom on new message even when you are actively trying to scroll the chat yourself- Big Picture: Fixed mouse wheel scrolling of carousels sometimes getting stuck on leftmost panel- Big Picture: Added list of favorite and popular Guides to library and overlay

Changes:- Added Language support for the Daisy Wheel control under Mac OS X- Changed Big Picture hotkey to Command+'/' under Mac OS X- Delete old temporary folders created by CEF left around due to previous crashes- Fixed Back behavior in several pieces of the UI- Fixed Big Picture displaying only a blank screen after startup if the intro movie was cancelled quickly- Friends sounds are now muted when running Big Picture and you choose mute in the audio settings- Fixed URLs in the Web Browser showing the end, not the start, of the current URL- Fixed Big Picture login screen not using your chosen UI language- Fixed activation fail sounds playing when clicking on some areas of a html page- Fixed password field in login UI not drawing entered characters properly under Mac OS X- Fixed right stick zoom in the html control jumping on zoom commit- Fixed scroll bars on HTML pages not updating when dragged via the mouse- Fixed some friends list font clipping due to small line heights- Removed default bind for Big Picture text console as it is no longer needed- Fixed crash on exit when doing a forced shutdown of the client

Changes:- Added Big Picture mode which is optimized for using Steam fullscreen with a Gamepad on HDTVs- Games managed by the new content system can select alternate installation locations other than the Steam folder (Windows)- Fixed the in-game overlay not recognizing correctly which game is running sometimes when running a non-Steam shortcut- Fixed some potential GDI handle leaks in the Steam client (Windows)- Fixed Steam Cloud occasionally not syncing files it should- Fixed a bug where entering a password-protected content beta without a password would act like it succeeded even though it handt- Improved TGA validation in image loading code- Improved steam:// URL validation in some cases- Fixed a new in-game overlay crash in very specific scenarios on Windows 8 with legacy DX9 games- Fixed problems uppercasing some characters (e.g. Greek terminal sigma)- Fixed error retrieving third party cd keys when launching games on OS X (OSX)- Fix the in-game overlay to correctly inject when a launcher calls ShellExecute with an empty string for the verb (Windows, fixes SWTOR)- Improvements to the change email wizard